Information processing method, retrieval method, device, user terminal and server

Abstract

The invention discloses an information processing method, a retrieval method, a device, a user terminal and a server. The retrieval method includes: the first user terminal receives the address information sent by the second user terminal for storing the encrypted file of the second user terminal user; The private information, non-private information and shared key corresponding to the address information are obtained on the cloud server and the trusted server; the address information of the file to be accessed is obtained by retrieving the private information and non-private information; the file to be accessed is obtained from the cloud server The first encrypted file corresponding to the address information; decrypt the first encrypted file through the shared key to obtain the file to be accessed. In the present invention, since the trust server is introduced in the process of information retrieval, the encrypted files uploaded by the user terminal to the cloud server can be retrieved by the trusted third-party user terminal, while ensuring the security of user files, it can fully Take advantage of the performance of cloud servers.

Description

Technical field [0001] The present invention relates to the field of network communication technology, in particular to information processing methods, retrieval methods, devices, user terminals and servers. Background technique [0002] Cloud computing is a technology that provides dynamic and easily expandable virtualized resources through the Internet. Through cloud computing, the network can be easily accessed, and by configuring a large number of storage devices, the storage and management of massive data can be realized. [0003] Cloud computing usually requires a lot of user participation. Users can upload their own files to the cloud server for storage. At this time, the user's files may be open to the outside world, and third-party users can retrieve the required files from the cloud server. Therefore, in order to protect the privacy and security of the user’s files, the user usually encrypts the file before uploading the file to the cloud server, and uploads the encrypted...

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present invention provides an information processing method, a retrieval method, a device, a user terminal, and a server, so as to solve the inconvenience of information sharing on the Internet caused by the inability to retrieve encrypted files on the cloud server in the prior art and the problems between users. The problem of low flexibility in sharing files

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